A、<span style="font-family: 宋体; font-size: 19px; line-height: 28.5px;">学位论文</span>
B、<span style="font-family: 宋体; font-size: 19px; line-height: 28.5px;">标准文献</span>
C、<span style="font-family: 宋体; font-size: 19px; line-height: 28.5px;">期刊论文</span>
D、<span style="font-family: 宋体; font-size: 19px; line-height: 28.5px;">报纸文献</span>